Arrowhead 135 mile Winter Ultramarathon

Confront one of the 50 toughest endurance races on Earth at the Arrowhead 135 on January 26, 2026. This legendary winter ultra-marathon challenges athletes to bike, run, or ski 135 miles through the extreme cold and deep solitude of northern Minnesota's snowmobile trails. Starting in International Falls—the coldest city in the continental U.S.—the race is a profound test of self-sufficiency, where historically brutal temperatures and a sub-50% finish rate demand unwavering preparation. With a modest entry fee supporting vital charities, it attracts a dedicated global community of winter ultra-athletes seeking the ultimate human-powered challenge. More than a competition, it's a raw journey across a frozen wilderness, defined by strength, survival, and profound personal discovery.